Heating device and railway vehicle

Abstract

The utility model discloses a heating device which comprises an installation support and a heater fixed on the installation support, an air guide piece used for enabling airflow to evenly pass through the outer surface of the heater is arranged on the installation support, the air guide piece comprises a plurality of air guide grilles arranged at intervals, and the heater comprises one or more heating elements. The heating elements are fixed on the mounting bracket in parallel, and the plurality of heating elements are mutually staggered without overlapping; another purpose of the utility model is to further disclose a railway vehicle, and the railway vehicle is provided with the heating device. According to the utility model, airflow uniformly passes through the heater under the flow guide action of the air guide piece, so that local overheating of the heater is avoided, the service life of the heater can be prolonged, and the safety coefficient of a heating element working in a narrow space is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail vehicles, and in particular relates to a heating device and a rail vehicle. Background Art

[0002] Existing rail vehicles are equipped with heaters in the side walls of toilets or crew compartments to deliver hot air to the toilets or crew compartments, thereby increasing the temperature in the toilets or crew compartments and improving the comfort of the vehicle. The heaters currently used in the above environments are generally PTC tube heaters, and the characteristics of PTC electric heating tubes cause their power to gradually decrease as the use time increases, resulting in insufficient heating inside the vehicle, affecting the comfort of the vehicle.

[0003] In addition, the rated power supply voltage of rail vehicles is AC400V. Due to the quality problem of the transformer, the high voltage fluctuation has been working at AC470V for a long time, which has caused the heater to work at AC470V voltage for a long time, resulting in the heater power increasing by 1.38 times. For narrow installation spaces such as toilets or crew rooms, the normally designed tubular electric heating power density often exceeds the specified safety power density. Local overheating of the electric heating tube and its surroundings will also increase the safety risks of electric heating accordingly. At the same time, the outlet temperature is too high, which can easily cause passengers to be scalded, reducing riding safety.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a heating device, which solves the problems of local overheating and low safety factor of the PTC tube heater installed in a narrow space on the existing rail vehicle.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is as follows:

[0007] A heating device comprises a mounting bracket and a heater fixed to the mounting bracket, wherein the mounting bracket is provided with an air guide member for evenly passing airflow through the outer surface of the heater, and the air guide member comprises a plurality of air guide grilles arranged at intervals.

[0008] Furthermore, the heater includes one or more heating elements, and the heating elements are fixed in parallel on the mounting bracket, and the multiple heating elements are staggered and non-overlapping.

[0009] Furthermore, the heating element is a U-shaped heating tube.

[0010] Furthermore, the heating element includes three U-shaped heating tubes, and the three U-shaped heating tubes are arranged in a herringbone shape.

[0011] Furthermore, the heating device is provided with an air outlet, and a protective mesh plate with heat reduction and heat resistance functions is provided at the air outlet.

[0012] Furthermore, the protective mesh plate is evenly distributed with a plurality of through holes for outputting the heated air flow.

[0013] Furthermore, the mounting bracket includes a base plate portion connecting the heating device and the position to be installed and a boss portion for supporting and installing the heating element. The base plate portion and the boss portion are integrally formed or fixed by a connecting piece.

[0014] Furthermore, the boss portion includes a top frame plate and polygonal side walls, and the boss portion is open at both ends and hollow inside, and an air outlet channel is formed in the hollow part. A heating element is installed on the top frame plate through a supporting bracket, and the air outlet channel transports the airflow at the heating element to the air outlet.

[0015] Furthermore, the air guide member is arranged in a cavity of the boss portion of the mounting bracket, and the air guide grille is detachably connected to the air guide member, or the air guide grille and the air guide member are integrally formed.

[0016] A rail vehicle, wherein a heating device as described in any one of the above items is applied and installed in the rail vehicle, and the heating device is installed on the side wall of a toilet or a crew compartment of the rail vehicle.

[0017] After adopting the above technical solution, the utility model has the following beneficial technical effects compared with the prior art:

[0018] 1. Through the guiding effect of the air guide, the air flow can pass through the heater evenly to avoid local overheating of the heater and extend the service life of the heater.

[0019] 2. For the installation space of rail vehicles, the heating pipe is set to a herringbone structure to meet the installation space requirements, improve the heating efficiency, and avoid local overheating of the electric heating pipe.

[0020] 3. A protective mesh is installed at the air outlet of the heating device. Under the dual effects of the protective mesh and the air guide, it can block the heat radiation on the surface of the heater from being directly transmitted to the car, avoid the high temperature of the air outlet from scalding passengers, and improve the safety of passengers.

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0023] In the attached picture:

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is another structural schematic diagram of the utility model;

[0026] Figure 3 It is a main schematic diagram of the utility model;

[0027] Figure 4 It is a right side schematic diagram of the utility model;

[0028] Figure 5 It is a structural schematic diagram of the air guide member in the utility model;

[0029] Figure 6 It is a structural schematic diagram of the protective mesh plate in the utility model.

[0030] Icons: 1. Mounting bracket; 11. Base plate; 12. Boss portion; 121. Top frame plate; 122. Side wall; 2. Heater; 21. Heating element; 3. Air guide; 31. Air guide grille; 4. Supporting footrest; 5. Protective mesh; 51. Through hole.

[0031] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Rail vehicles generally have a heater 2 installed in the side wall of a toilet or a crew compartment to provide heat to the toilet or the crew compartment. The heater 2 used is usually a PTC tube heater. The currently installed PTC tube heater has problems such as power reduction after long-term use, uneven heating, local overheating, shortened service life, and reduced safety of use.

[0036] In order to solve the above existing technical problems, Figure 1-2 As shown, the utility model provides a heating device, including a mounting bracket 1 and a heater 2 fixed to the mounting bracket 1, the mounting bracket 1 is provided with an air guide 3 for evenly passing air flow through the outer surface of the heater 2, and the air guide 3 includes a plurality of air guide grilles 31 arranged at intervals.

[0037] In the embodiment of the utility model, the mounting bracket 1 is not only a carrier for fixing and supporting the heater 2, but also a connecting body between the heating device and the side wall of the rail vehicle body at the location to be installed.

[0038] Specifically, the mounting bracket 1 includes a base plate portion 11 connecting the heating device and the location to be mounted and a boss portion 12 for supporting and mounting the heating element 21 . The base plate portion 11 and the boss portion 12 are integrally formed or fixed by a connector.

[0039] The base plate 11 is a plate structure with uniform thickness. A plurality of screw holes for installation are provided on the base plate 11. The base plate 11 is fixed to the installation position on the side wall of the rail vehicle body by fixing screws installed in the screw holes of the base plate 11, thereby achieving a stable installation of the entire heating device.

[0040] Optionally, the substrate portion 11 may be any one of a rectangular, square, circular, triangular, and polygonal shape. Those skilled in the art may specifically select and determine the shape of the substrate portion 11 according to the shape of the heating element 21 and the location to be installed.

[0041] The heating device is also provided with an air outlet, and a protective mesh plate 5 with heat reduction and heat resistance is provided at the air outlet. Specifically, the air outlet is provided on the substrate portion 11, and the substrate portion 11 and the protective mesh plate 5 can be an integral die-casting structure, or can be connected by a fixing member.

[0042] Further, such as Figure 6 As shown, a plurality of through holes 51 for outputting heated air flow are evenly distributed on the protective mesh plate 5 .

[0043] Optionally, the through hole 51 may be one or more of a circular, triangular, rectangular, square, trapezoidal, or other special shapes. Those skilled in the art may make specific selections and designs according to actual needs, as long as smooth output of airflow can be achieved.

[0044] Preferably, the through hole 51 is circular. The circular design of the through hole 51 can ensure that air can flow through the hole evenly, avoiding dead corners or local poor ventilation. While meeting ventilation needs, it can reduce the risk of deformation or breakage, and is also easier to clean and maintain.

[0045] The boss portion 12 is a wall-like structure protruding from the base plate portion 11 , and the boss portion 12 is used to support and install the heating element 21 .

[0046] Furthermore, the boss portion 12 includes a top frame plate 121 and a polygonal side wall 122, and the boss portion 12 is open at both ends and hollow inside, forming an air outlet channel in the hollow part. A heating element 21 is installed on the top frame plate 121 through a supporting leg 4, and the air outlet channel transports the heated airflow at the heating element 21 to the air outlet.

[0047] As an embodiment of the present invention, the side wall 122 includes a first side wall, a second side wall, a third side wall, and a fourth side wall. The first side wall, the second side wall, the third side wall, and the fourth side wall are wall panels with uniform thickness, and the wall panels are rectangular or trapezoidal.

[0048] The sides of the first side wall, the second side wall, the third side wall and the fourth side wall are sequentially connected to form a boss portion 12 of a surrounding wall structure.

[0049] The first side wall, the second side wall, the third side wall, and the fourth side wall are rectangular or trapezoidal, and the first side wall and the third side wall are the same in shape and size, and the second side wall and the fourth side wall are the same in shape and size, so that a relatively regular air outlet channel is formed after the side walls are enclosed.

[0050] Furthermore, the first side wall and the third side wall are arranged opposite to each other and have a first spacing, and the second side wall and the fourth side wall are arranged in parallel and have a second spacing, wherein the first spacing is a gradual value, and the first spacing gradually decreases from the end near the base plate 11 to the end near the top frame plate 121 until it is equal to the width of the top frame plate 121; the second spacing is a fixed value, which is equal to the distance between the second side wall and the fourth side wall.

[0051] Optionally, the first side wall, the second side wall, the third side wall, and the fourth side wall are connected by fasteners, or the first side wall, the second side wall, the third side wall, and the fourth side wall are integrally formed. Preferably, in this embodiment, the side walls are integrally formed, so that the boss portion 12 of the mounting bracket 1 has high support strength, saves preparation materials, and reduces redundant parts.

[0052] The top frame plate 121 is a rectangular strip plate, and a hollow hole is arranged on the top frame plate 121 for the hot air flow emitted by the heater 2 to pass through. The hollow hole can be one or more of a rectangle, square, circle, trapezoid or other irregular shapes.

[0053] Preferably, as an embodiment of the present invention, the hollow holes at one end of the top frame plate 121 are a plurality of rectangular holes, and the hollow holes at the other end are a plurality of relatively densely packed circular holes, wherein the area of ​​the circular hollow holes is much smaller than the rectangular hollow holes. Obviously, the end of the top frame plate 121 with the circular hollow holes corresponds to the centralized heat dissipation area of ​​the heating device, so as to avoid the direct transmission of a large amount of heated airflow causing the air outlet temperature to be too high.

[0054] A support bracket 4 is provided on the top frame plate 121. The cross section of the support bracket 4 is an isosceles trapezoidal shape. The support bracket 4 of this shape has three mounting surfaces to meet the needs of the three heating tubes being arranged in a triangular shape. It is understandable that a person skilled in the art can also choose to install a support bracket 4 of other shapes to meet the specific installation needs of the user.

[0055] The top and waist of the support bracket 4 are both provided with clamps for fixing the heater 2, and the clamps include arched ears on both sides for fixing and clamping and a fixing part in the middle for connecting with the support bracket 4. Furthermore, a mounting hole is provided on the fixing part, and a fixing bolt is installed in the mounting hole to install the clamp on the support bracket 4.

[0056] The bottom of the support leg 4 is detachably connected to the top frame plate 121. Specifically, the top frame plate 121 is connected to the support leg 4 via a fixing screw.

[0057] As attached Figure 1As shown in the structure, the boss portion 12 is open at both ends and hollow inside, and an air outlet channel is formed in the hollow part, and the length of the air outlet channel is equal to the length of the short side of each side wall of the boss portion 12. A heating element 21 is installed at the end of the boss portion 12 far from the base portion 11, and the air outlet channel transports the airflow at the heating element 21 to the air outlet, thereby transferring the heat generated by the heating element 21 to the toilet or crew room of the rail vehicle.

[0058] It is understandable that those skilled in the art can also design the boss portion 12 into other shapes as long as it can support the heater 2 and transmit the heated airflow. For example, the boss portion 12 can also be set to be a cylindrical shape with openings at both ends and a hollow interior.

[0059] Furthermore, the mounting bracket 1 is also provided with an air guide 3 for guiding the airflow to pass evenly through the outer surface of the heater 2, and the air guide 3 includes a plurality of air guide grilles 31 arranged at intervals. In this embodiment, the air guide grilles 31 can not only guide the airflow so that the outer surface of the heater 2 is heated more evenly, but also block the heat radiation from the surface of the heater 2 from being directly transmitted to the vehicle, thereby preventing the air outlet temperature from being too high and scalding passengers, thereby improving the safety of the device.

[0060] The air guide member 3 is arranged at the air outlet channel or the air outlet of the heating device, and the air guide member 3 is detachably connected to the mounting bracket 1, or the air guide member 3 and the mounting bracket 1 are integrally formed.

[0061] Preferably, as attached Figure 2 As shown, the air guide member 3 is arranged in the air outlet channel of the heating device; the air guide member 3 is detachably connected to the mounting bracket 1.

[0062] Furthermore, the air guide grille 31 and the air guide member 3 are detachably connected, or the air guide grille 31 and the air guide member 3 are integrally formed.

[0063] The detachable connection between the air guide grille 31 and the air guide member 3 specifically includes: the air guide grille 31 is fixed to the air guide member 3 by a fastener, or the air guide grille 31 is arranged on the air guide member 3 by a rotation connection. It should be noted that when the air guide grille 31 is arranged on the air guide member 3 by a rotation connection, the guide angle and / or the air outlet angle of the heated airflow can be adjusted according to actual needs to meet various needs of users.

[0064] As attached Figure 5 As shown, preferably, the air guide grille 31 and the air guide member 3 are integrally formed, with a simple structure and easy assembly and disassembly.

[0065] A heater 2 is provided on the boss portion 12 of the mounting bracket 1. The heater 2 is used to heat the air from the air supply duct. After the air is heated by the heater 2, it is guided by the air guide 3 so that the air flow passes through the outer surface of the heater 2 evenly, providing sufficient heat to the waiting heating position of the rail vehicle toilet and the crew room.

[0066] As an embodiment of the present invention, the following Figure 3-4 As shown, the heater 2 includes one or more heating elements 21, which are fixed in parallel to the mounting bracket 1. The multiple heating elements 21 are staggered and non-overlapping to avoid overlapping of the heating elements 21 causing local excessive temperature and affecting their service life.

[0067] Further, as attached Figure 3 As shown, the heating element 21 is a U-shaped heating tube, which has a U-shaped shape and has the advantages of uniform heating, good stability and long service life.

[0068] Further, as attached Figure 4 As shown, the heating element 21 includes three U-shaped heating tubes, which are arranged in a herringbone shape. The herringbone shape arrangement of the heating tubes not only fully utilizes the installation space in the side wall of the rail vehicle, but also avoids the overlapping of the heating areas of each heating tube, so that the heating tubes can fully and timely dissipate heat.

[0069] It should be noted that in order to enhance the stability of the installation of the heating tubes, adjacent heating tubes may be connected and fixed by connecting pieces.

[0070] In order to avoid the potential safety hazard of electric heating caused by the voltage fluctuation of the vehicle, in this embodiment, the heating tube is provided with a temperature protection switch. Furthermore, the temperature protection switch includes a two-stage temperature protection switch, which specifically includes: the first-stage switch is disconnected at 70±10℃ and automatically resets at 50±10℃; the second-stage switch is disconnected at 139±10℃ and needs to be manually restored after troubleshooting.

[0071] The two-stage temperature protection switch is set at the power-intensive area of ​​the U-shaped heating tube near the air supply downstream of the electric heating tube. The opening and closing of the heating tube is controlled by timely monitoring the temperature value on the surface of the heating tube, ensuring the safe operation of the electric heating and eliminating the fire hazard of the vehicle.

[0072] The embodiment of the utility model also provides a rail vehicle, in which any one of the above-mentioned heating devices is installed, and the heating device is embedded in the side wall of the rail vehicle toilet or crew room. Specifically, the heater 2 is installed and connected to the side wall of the vehicle body through the mounting bracket 1, and the air supply duct sends the air from the passenger compartment into the side wall of the vehicle body. Under the action of the air guide 3, the air flow evenly passes through the outer surface of the heating pipe, thereby providing sufficient heat to the vehicle toilet or crew room.

[0073] After adopting the above embodiments, the utility model has the following beneficial effects compared with the prior art:

[0074] Through the guiding effect of the air guide member 3, the air flow is made to pass through the heater 2 evenly, thereby avoiding local overheating of the heater 2 and extending the service life of the heater 2.

[0075] According to the installation space of the rail vehicle, the heating pipe is set to a herringbone structure to meet the installation space requirements, improve the heating efficiency, and avoid local overheating of the electric heating pipe;

[0076] A protective mesh plate 5 is provided at the air outlet of the heating device. Under the dual effects of the protective mesh plate 5 and the air guide 3, the heat radiation on the surface of the heater 2 can be blocked from being directly transmitted to the vehicle, thereby preventing the passengers from being scalded by the high temperature of the air outlet and improving the safety of the passengers.

[0077] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A heating device, comprising a mounting bracket (1) and a heater (2) fixed to the mounting bracket (1), characterized in that: The mounting bracket (1) is provided with an air guide member (3) for evenly passing airflow through the outer surface of the heater (2); the air guide member (3) comprises a plurality of air guide grilles (31) arranged at intervals.

2. A heating device according to claim 1, characterized in that: The heater (2) comprises one or more heating elements (21), and the heating elements (21) are fixed in parallel on the mounting bracket (1), and the multiple heating elements (21) are staggered and non-overlapping.

3. A heating device according to claim 2, characterized in that: The heating element (21) is a U-shaped heating tube.

4. A heating device according to claim 3, characterized in that: The heating element (21) comprises three U-shaped heating tubes, and the three U-shaped heating tubes are arranged in a herringbone shape.

5. A heating device according to any one of claims 1 to 4, characterized in that: The heating device is provided with an air outlet, and a protective mesh plate (5) having the function of reducing heat and resisting heat is provided at the air outlet.

6. A heating device according to claim 5, characterized in that: The protective mesh plate (5) is evenly distributed with a plurality of through holes (51) for outputting heated air flow.

7. A heating device according to claim 1, characterized in that: The mounting bracket (1) comprises a base plate portion (11) connecting the heating device and the position to be installed, and a boss portion (12) for supporting and installing the heating element (21); the base plate portion (11) and the boss portion (12) are integrally formed or fixed by a connecting piece.

8. A heating device according to claim 7, characterized in that: The boss portion (12) comprises a top frame plate (121) and a polygonal side wall (122), and the boss portion (12) is open at both ends and hollow inside, wherein an air outlet channel is formed in the hollow part, and a heating element (21) is mounted on the top frame plate (121) via a supporting foot frame (4), and the air outlet channel transports the airflow at the heating element (21) to the air outlet.

9. A heating device according to claim 1, characterized in that: The air guide member (3) is arranged in the cavity of the boss portion (12) of the mounting bracket (1), and the air guide grille (31) and the air guide member (3) are detachably connected, or the air guide grille (31) and the air guide member (3) are integrally formed.

10. A rail vehicle, characterized in that: The rail vehicle is installed with a heating device as described in any one of claims 1 to 9, and the heating device is installed on a side wall (122) of a toilet or a crew compartment of the rail vehicle.

Images